Не запускается терминал в VSCode

import React from 'react';
import './App.css';
import Header from './components/Header';
import Navbar from './components/Navbar';
import Profile from './components/Profile';

const App =()=> {
  return (
   <div className = "app-wrapper">
     <Header/>
     <Navbar />
    <Profile />
   </div>
  );
}

export default App;

.app-wrapper {
  margin: 0px auto;
  display: grid;
  grid-template-areas:
  'h h'
  'n c';
  grid-template-rows: 60px 1fr;
  grid-template-columns: 2fr 10fr;
  grid-gap: 10px;
  width: 1200px;
}